The Stihl 41400300407 is a genuine OEM crankshaft designed for various Stihl outdoor power equipment models. This essential engine component ensures proper rotational motion, critical for the reliable operation of your Stihl FS 55, FS 55 R, FS 55 RC-E, FS 55 T trimmers, as well as HL 45 hedge trimmers, HS 45 hedge trimmers, and KM 55, KM 55 R KombiEngines. Manufactured to Stihl's rigorous specifications, it guarantees durability and optimal performance for maintaining your equipment.